IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Styrene with Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Styrene; C8H8; [100-42-5]  NIST Chemistry WebBook for detail

Evaluator:
   G.T. Hefter, School of Mathematical and Physical Sciences, Murdoch University, Perth, W.A., Australia. July 1985.

Critical Evaluation:

    Quantitative solubility data for the styrene (1) – water (2) system have been reported in the publications listed in Table 1.

The Original data in these publications are compiled in the Data Sheets immediately following this Critical Evaluation. For convenience further discussion of this system will be in two parts.

1. SOLUBILITY OF STYRENE (1) IN WATER (2)

All the available data (ref 1-5) are listed in Table 2. At 298K the agreement among the independent measurements ( 1,3-5) is reasonable but not sufficient to enable the average value to be Recommended.

At other temperatures, the value of Fordyce and Chapin (ref 2) at ~ 333K is very much higher than that of Lane (ref 1). Since the latter were obtained by two independent methods and, as already noted, are in fair agreement with other determinations at 298K, the datum of Fordyce and Chapin is rejected. In the absence of confirmatory studies the data at temperatures other than 298K should be regarded as very tentative.

2. THE SOLUBILITY OF WATER (2) IN STYRENE (1)

The solubility of water in styrene has been reported in only one study (ref 1) and thus no Critical Evaluation is possible. The interested user is referred to the relevant data sheet for the experimental solubility values.

Experimental Data:   (Notes on the Nomenclature)

Table 1. Quantitative Solubility Studies of the Styrene (1) - Water (2) System
Author	T/K	Reference	Solubility	Method	Method Note
Lane	298-324	1	mutual	various	a
Fordyce and Chapin	333	2	(1) in (2)	titration
Frilette and Hohenstein	298	3	(1) in (2)	unspecified
Andrews and Keefer	298	4	(1) in (2)	spectrophotometric
Bannerjee et al.	298	5	(1) in (2)	HPLC

Table 2. Tentative Values of the Styrene (1) in Water (2)
T/K	Reference	Solubility	Sol. Note	Best Solubility	Best Sol. Note	x₁ Power	x₁
283	1	0.029* g(1)/100g sln	a	0.029 g(1)/100g sln	-	5	5.0
293	1	0.030* g(1)/100g sln	a	0.030 g(1)/100g sln	-	5	5.2
298	1, 3, 4, 5	0.033*, 0.022, 0.030, 0.016 g(1)/100g sln	a	0.025 ± 0.006 g(1)/100g sln	b	5	4.3
303	1	0.034 g(1)/100g sln	a	0.034 g(1)/100g sln	-	5	5.9
313	1	0.040* g(1)/100g sln	a	0.040 g(1)/100g sln	-	5	6.9
323	1	0.046* g(1)/100g sln	a	0.046 g(1)/100g sln	-	5	8.0
333	1	0.053*, 0.95^c g(1)/100g sln	a	0.053 g(1)/100g sln	-	5	9.2

Notes:
Table 1^a  Chemical analysis and cloud point measurements for (1) in (2). Karl Fischer and cloud point measurements for (2) in (1).
Table 2^a  Values marked with an asterisk (*) were obtained by the Evaluator by graphical interpolation of the author's two data sets, followed by averaging.
Table 2^b  Average (± σ_n ) of all data; sigma has no statistical significance.
Table 2^c  At T =333.5k, value rejected ; see text.

References: (Click a link to see its experimental data associated with the reference)

   1  Lane, W.H., Ind. Eng. Chem. Anal. Ed. 1946, 18, 295-6.
   2  Fordyce, R.G.; Chapin, E.C., J. Am. Chem. Soc. 1947, 69, 581-3.
   3  Frilette, V.J.; Hohenstein, W.P., J. Polym. Sci. 1948, 3, 22-31.
   4  Andrews, L.J.; Keefer, R.M., J. Am. Chem. Soc. 1950, 72, 5034-7.
   5  Banerjee, S.; Yalkowsky, S.H.; Valvani, S.C., Environ. Sci. Technol. 1980, 14, 1227-9.